Cold Blackening Fluid

An improved formula both for experts and non-professionals. With KLEVER-"Schnellbrünierung", you can give steel (not exceeding a chromium content of 3%) and iron a flawless browning. Whether to refinish a worn blackening on handguns or long firearms, to brown entire weapons or armours, or to blacken small parts in trade and industry: KLEVER cold blackening fluid spares you tedious burnishing bathes and saves time and money. The 50 ml bottle weighs approx. 72 g.

Price incl. 21% VAT: 16

Availability: In stock 1pcs!

Price of the selection: 16
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  • Product No: 9971

Variants in stock

50 ml pcs (1 pcs In stock)

Ballistol Do-It-Yourself Cold Blackening Fluid, 50/1000 ml bottle


The surface to be blackened should be carefully degreased (e.g. with Robla cold degreaser). Then apply KLEVER cold browning with a brush. Let it work for about 3 to 30 Minutes, until a yellowish-white film has formed. Now rinse it thoroughly with water (using a brush), dab the surface dry with a soft cloth or a paper towel and spray with BALLISTOL or GUNEX for protection.


  1. Noxious
  2. Environmentally hazardous

General information on Blackening

The blackening is also described as bronzing. It is a process of coloring of steel products, so that they get an attractive black color which also provides in part the protection against corrosion (especially of hunting firearms). A thin black or blue-black-color oxide is developed during the blackening.

For a perfect oxide coating, it is important that the surface is well processed. The finer processed the surface is, the brighter and better the resultant effect is. The items to be blackened should have clean surface without rust and scales. The blackening oxide copies the inequality of the surface such as scratches, cracks, local roughness, etc. If you want a glossy coating, polish the metal parts mechanically before blackening. In order to achieve a matte finish, roughen the metal surface first.

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